"The man who made the signs and shot the video is a retired member of the Pennsylvania State Police. He did not wish to be identified, but he told abc27 up front he doesn't like Brown and wanted to test his integrity," according to the report.

Hampden Township police told ABC 27 that they are investigating the matter.

State police released this statement from Brown: "The safety of my children is my highest priority. These signs were placed within feet of my children's bus stop, and I acted as a father."

Since his appointment
, Brown has been openly criticized as an outsider brought in to lead an agency with 4,677 sworn members and more than 1,600 civilians.

For example, one
Facebook group organized by retired troopers
took aim at his donning the gray uniform. His predecessor, Frank Noonan, who came from the FBI and the state Attorney General's Office, wore business suits during his time in the post.